JP3384677B2 - Digital broadcast receiver - Google Patents
Digital broadcast receiverInfo
- Publication number
- JP3384677B2 JP3384677B2 JP06398096A JP6398096A JP3384677B2 JP 3384677 B2 JP3384677 B2 JP 3384677B2 JP 06398096 A JP06398096 A JP 06398096A JP 6398096 A JP6398096 A JP 6398096A JP 3384677 B2 JP3384677 B2 JP 3384677B2
- Authority
- JP
- Japan
- Prior art keywords
- channel
- time
- delay time
- digital broadcast
- broadcast receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
- H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
Description
【０００１】[0001]
【発明の属する技術分野】本発明はデジタル放送の受信
機に関し、特に、目的に応じて自動的にチャンネル切換
えが行なわれるデジタル放送受信機に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiver, and more particularly to a digital broadcast receiver in which channel switching is automatically performed according to the purpose.
【０００２】[0002]
【従来の技術】デジタル放送においては、図６に示す如
く、同一内容の番組を複数のチャンネルＡ〜Ｅで遅延時
間を段階的にずらして放送するタイムシフトサービス放
送が予定されている。タイムシフトサービス放送によれ
ば、最も遅く始まるチャンネルの放送開始時刻までに視
聴開始操作を行なえば、何れかのチャンネルの放送がそ
の直後に開始されるので、チャンネル選択に関しては、
ビデオオンデマンドの操作に近い“ニアビデオオンデマ
ンド”の操作を実現することが出来る。2. Description of the Related Art In digital broadcasting, as shown in FIG. 6, a time-shift service broadcasting is planned in which a program having the same content is broadcast on a plurality of channels A to E with a delay time being shifted stepwise. According to the time shift service broadcast, if the viewing start operation is performed by the broadcast start time of the channel that starts latest, the broadcast of any channel will start immediately after that.
It is possible to realize "near video on demand" operation, which is similar to video on demand operation.
【０００３】[0003]
【発明が解決しようとする課題】ところで、ビデオオン
デマンドにおいては、ポーズ、巻き戻し、早送りなど、
ＶＴＲと同様の操作が可能であるが、ニアビデオオンデ
マンドにおいては、１つのチャンネルを複数の視聴者が
視聴するので、ＶＴＲの如き操作は不可能である。そこ
で、本発明の目的は、タイムシフトサービス放送を利用
することによって、ＶＴＲにおけるポーズ、巻き戻し、
及び早送りに近い操作を可能とすることである。By the way, in video-on-demand, pause, rewind, fast forward, etc.
Although an operation similar to that of a VTR is possible, a plurality of viewers watch one channel in near video on demand, and therefore an operation like that of a VTR is impossible. Therefore, an object of the present invention is to pause, rewind, and rewind in a VTR by using time shift service broadcasting.
And to enable an operation close to fast-forward.
【０００４】[0004]
【課題を解決する為の手段】本発明に係る第１のデジタ
ル放送受信機は、同一内容の番組が複数のチャンネルで
放送され、これら複数のチャンネルは番組の放送時間に
ついて互いに異なる遅延時間を有しているタイムシフト
サービス放送を受信して、ＶＴＲのポーズ(視聴一時中
断)に近い操作を実現するものであって、視聴の中断指
令及び再開指令を入力するための操作手段と、視聴の中
断指令が発せられた後、視聴の再開指令が発せられるま
での中断時間を計測する計時手段と、視聴の再開指令が
発せられた直後に、デジタル放送信号から前記複数のチ
ャンネルの遅延時間を取得し、記憶する記憶手段と、視
聴の再開指令に応じて、前記記憶手段を検索し、当初視
聴していたチャンネルを基準とする相対的な遅延時間
が、中断時間よりも大であり、且つ最も中断時間に近い
値を有しているチャンネルを決定する検索手段と、当初
視聴していたチャンネルを、前記決定されたチャンネル
に切り換えるチャンネル切換え手段とを具えている。In a first digital broadcast receiver according to the present invention, a program having the same content is broadcast on a plurality of channels, and the plurality of channels have different delay times with respect to the broadcast time of the program. The present invention realizes an operation close to a pause (temporary interruption of viewing) of a VTR by receiving a time-shift service broadcast being performed, and an operating means for inputting a viewing interruption command and a viewing restart command, and a viewing interruption. After the command is issued, the time measuring means for measuring the interruption time until the viewing restart command is issued, and immediately after the viewing restart command is issued, the delay times of the plurality of channels are acquired from the digital broadcast signal. The storage means for storing and the storage means are searched in response to a viewing restart command, and the relative delay time based on the initially viewed channel is longer than the interruption time. There are comprises search means for determining a channel having a and closest to the interrupt time value, the channel which has been viewed initially, a channel switching means for switching the channel the determined.
【０００５】上記デジタル放送受信機において、あるチ
ャンネルの視聴中に、視聴の中断指令を発すると、その
時点から計時手段が計時を開始する。その後、視聴の再
開指令を発すると、計時手段は中断時間を算出して、そ
の結果を検索手段へ送出する。又、視聴の再開指令が発
せられた時点で、記憶手段は、デジタル放送に多重され
て送られてくる情報の中から、前記複数のチャンネルの
遅延時間を取得し、記憶する。その後、検索手段は記憶
手段を検索して、切換え先のチャンネルを決定する。決
定された切換え先のチャンネルは、当初視聴していたチ
ャンネルに対し、中断時間よりも長い遅延時間を有して
いるので、このチャンネルに切り換えた場合に番組の見
落とし部分は発生しない。又、決定された切換え先のチ
ャンネルは、当初視聴していたチャンネルに対し、最も
中断時間に近い遅延時間を有しているので、番組の重複
視聴部分は最小限に抑えられる。In the digital broadcast receiver, when a viewing interruption command is issued while a certain channel is being viewed, the timing means starts timing from that point. After that, when a viewing restart command is issued, the time measuring means calculates the interruption time and sends the result to the searching means. Further, at the time point when the viewing restart command is issued, the storage means acquires and stores the delay times of the plurality of channels from the information multiplexed and sent in the digital broadcast. After that, the search means searches the storage means to determine the channel to switch to. Since the determined switching destination channel has a delay time longer than the interruption time with respect to the initially viewed channel, no overlooked portion of the program occurs when switching to this channel. Further, the determined switching destination channel has a delay time which is the closest to the interruption time with respect to the initially viewed channel, so that the overlapping viewing portion of the program can be minimized.
【０００６】本発明に係る第２のデジタル放送受信機
は、同一内容の番組が複数のチャンネルで放送され、こ
れら複数のチャンネルは番組の放送時間について互いに
異なる遅延時間を有しているタイムシフトサービス放送
を受信して、ＶＴＲの巻き戻し或いは早送りに近い操作
を実現するものであって、前記所望の時間差を入力する
ための操作手段と、前記所望の時間差が入力された直後
に、デジタル放送信号から前記複数のチャンネルの遅延
時間を取得し、記憶する記憶手段と、前記所望の時間差
の入力に応じて、現在視聴しているチャンネルの遅延時
間に、前記所望の時間差を加算或いは減算して、目標遅
延時間を算出する演算手段と、目標遅延時間に最も近い
遅延時間を有するチャンネルを検索する検索手段と、当
初視聴していたチャンネルを、検索されたチャンネルに
切り換えるチャンネル切換え手段とを具えている。The second digital broadcast receiver according to the present invention is a time shift service in which a program having the same content is broadcast on a plurality of channels, and the plurality of channels have different delay times with respect to the broadcast time of the program. An operation unit for receiving a broadcast and rewinding or fast-forwarding a VTR, and an operation means for inputting the desired time difference, and a digital broadcast signal immediately after the desired time difference is input. From the storage means for acquiring the delay time of the plurality of channels from the storage unit and the input of the desired time difference, the desired time difference is added to or subtracted from the delay time of the channel currently being viewed, The calculation means for calculating the target delay time, the search means for searching the channel having the delay time closest to the target delay time, and the channel that was originally viewed The panel, which comprises a channel switching means for switching to the searched channel.
【０００７】上記デジタル放送受信機においては、ある
チャンネルの視聴中に、逆送り指令(又は前送り)を発す
ると共に、所望の時間差を入力すると、記憶手段は、デ
ジタル放送に多重されて送られてくる情報の中から、複
数のチャンネルの遅延時間を取得し、記憶する。次に演
算手段は、現在視聴中のチャンネルの遅延時間に前記入
力された時間差を加算(前送りの場合は減算)して、目標
遅延時間を算出する。その後、検索手段は記憶手段を検
索して、切換え先のチャンネルを決定する。決定された
切換え先のチャンネルは、当初視聴していたチャンネル
に対し、目標遅延時間に最も近い遅延時間を有している
ので、所望の逆送り操作(又は前送り操作)が実現される
ことになる。[0007] In the digital broadcast receiver, when a reverse feed command (or forward feed) is issued and a desired time difference is input while watching a certain channel, the storage means is multiplexed and sent to the digital broadcast. The delay times of a plurality of channels are acquired from the incoming information and stored. Next, the calculating means calculates the target delay time by adding (subtracting in the case of forward feed) the input time difference to the delay time of the channel currently being viewed. After that, the search means searches the storage means to determine the channel to switch to. The determined switching destination channel has the delay time closest to the target delay time with respect to the initially viewed channel, so that the desired reverse feed operation (or forward feed operation) is realized. Become.
【０００８】[0008]
【発明の効果】本発明に係るデジタル放送受信機によれ
ば、タイムシフトサービス放送を利用することによっ
て、ＶＴＲにおけるポーズ、巻き戻し、及び早送りに近
い操作を実現することが出来る。According to the digital broadcast receiver of the present invention, by using the time shift service broadcast, operations similar to pause, rewind, and fast forward in the VTR can be realized.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態につ
き、図面に沿って具体的に説明する。図１は、本発明に
係るデジタル放送受信機の構成を表わしている。チュー
ナ(１)によって受信されたデジタル放送信号は復調回路
(２)にてデジタルデータに復調され、更に誤り訂正回路
(３)を経て誤り訂正が施された後、データ分離回路(４)
にて、デジタルデータから所望の映像、音声、及び制御
データが分離される。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows the configuration of a digital broadcast receiver according to the present invention. The digital broadcast signal received by the tuner (1) is a demodulation circuit
It is demodulated to digital data in (2) and further error correction circuit
After performing error correction through (3), the data separation circuit (4)
At, desired video, audio, and control data are separated from the digital data.
【００１０】分離された映像データは映像出力回路(５)
へ供給されて、映像信号にデコードされた後、ディスプ
レイ装置(図示省略)へ出力される。分離された音声デー
タは音声出力回路(６)へ供給されて、音声信号にデコー
ドされた後、スピーカ装置(図示省略)へ出力される。
又、分離された制御データは制御回路(７)へ供給され
る。制御回路(７)は、制御データと、操作入力装置(８)
から入力される操作入力データを解読し、その解読結果
に応じて装置全体を制御するものである。The separated video data is a video output circuit (5)
Is supplied to a display device (not shown) after being decoded into a video signal. The separated audio data is supplied to the audio output circuit (6), decoded into an audio signal, and then output to a speaker device (not shown).
Further, the separated control data is supplied to the control circuit (7). The control circuit (7) has control data and an operation input device (8).
The operation input data input from the device is decoded, and the entire device is controlled according to the decoding result.
【００１１】図３(ａ)は、デジタル放送における多重化
デジタルデータ(トランスポートストリーム)のパケット
構造を表わしており、ヘッダ部とペイロード部によって
１つのパケットが構成される。ヘッダ部において、第１
〜第８ビットは同期バイトであって、この信号によって
パケット同期がとられる。第１２〜第２４ビットはパケ
ット識別番号(ＰＩＤ)であって、この値によってペイロ
ード部のデータの属性が判別される。図１のデータ分離
回路(４)は制御回路(７)からの命令によって指定された
ＰＩＤのパケットを分離抽出する。FIG. 3A shows a packet structure of multiplexed digital data (transport stream) in digital broadcasting, and one packet is composed of a header part and a payload part. In the header part, the first
~ The 8th bit is a synchronization byte, and packet synchronization is achieved by this signal. The 12th to 24th bits are the packet identification number (PID), and the attribute of the data of the payload part is determined by this value. The data separation circuit (4) of FIG. 1 separates and extracts the packet of the PID designated by the instruction from the control circuit (7).
【００１２】又、図３(ａ)に示すペイロード部におい
て、第１〜第８ビットはテーブルＩＤであって、ペイロ
ード部に含まれるデータの種別を表わす。ヘッダ部のＰ
ＩＤとテーブルＩＤの組合せによって、全てのデータの
属性や種別を判別することが出来、図１のデータ分離回
路(４)によるデータの分離抽出が行なわれる。Further, in the payload portion shown in FIG. 3A, the first to eighth bits are a table ID and represent the type of data contained in the payload portion. P of header
The attributes and types of all the data can be discriminated by the combination of the ID and the table ID, and the data separation circuit (4) in FIG. 1 separates and extracts the data.
【００１３】本実施例においては、ＰＩＤとして１０
０、テーブルＩＤとして１００を割り当て、データ部の
書式を図３(ｂ)の如く規定する。ここで、チャンネル番
号として１６ビットを使用し、遅延時間(分単位)として
８ビットを使用する。そして、この合計２４ビットのグ
ループをデータ部の先頭から必要個数だけ繰り返す。デ
ータの終端部には、全て１のビットからなるチャンネル
番号を付加する。In this embodiment, the PID is 10
0 and 100 are assigned as the table ID, and the format of the data part is defined as shown in FIG. Here, 16 bits are used as the channel number and 8 bits are used as the delay time (in minutes). Then, this group of total 24 bits is repeated by the required number from the beginning of the data part. A channel number consisting of all 1 bits is added to the end of the data.
【００１４】図２は、上記デジタル放送受信機によるタ
イムシフトサービス放送の受信手続きを表わしている。
先ずステップＳ１にて、ニアビデオオンデマンドの視聴
開始のための手続きを実行した後、ステップＳ２にてニ
アビデオオンデマンドによる番組の視聴を開始する。次
にステップＳ３では、ポーズ操作、逆送り操作、前送り
操作の何れかが行なわれたかどうかを判別し、ポーズ操
作の場合はステップＳ４へ、逆送り操作の操作の場合は
ステップＳ７へ、前送り操作の場合はステップＳ８へ移
行する。又、何れの操作もないときは、ステップＳ１０
へ移行する。FIG. 2 shows a procedure for receiving a time shift service broadcast by the digital broadcast receiver.
First, in step S1, a procedure for starting viewing of near video on demand is executed, and then in step S2, viewing of a program by near video on demand is started. Next, in step S3, it is determined whether any of a pause operation, a reverse feed operation, and a forward feed operation has been performed. In the case of a pause operation, the operation proceeds to step S4, and in the case of a reverse feed operation, the operation proceeds to step S7. If it is a feed operation, the process proceeds to step S8. If there is no operation, step S10
Move to.
【００１５】ポーズ操作が行なわれた場合、ステップＳ
４では、現在視聴中のチャンネルの番組遅延情報を記憶
すると共に、現在時刻を記憶する。図４(ａ)は、この時
点における記憶内容の一例を表わしている。次に図２の
ステップＳ５にて、ポーズ終了操作が行なわれたかどう
かが判断され、ＹＥＳのときはステップＳ６に移行し
て、前記記憶された現在時刻からの経過時間、即ち中断
時間を算出する。又、同一の番組を放送している全ての
チャンネルの番組遅延情報を取得し、記憶する。図４
(ｂ)は、この時点における記憶内容の一例を表わしてい
る。中断開始時点では、３つのチャンネルＡ、Ｂ、Ｃが
放送されていたが、中断終了時点では、４つのチャンネ
ルＤ〜Ｇが放送に加わっている。When a pause operation is performed, step S
In 4, the program delay information of the channel currently being viewed and the current time are stored. FIG. 4A shows an example of the stored contents at this point. Next, in step S5 of FIG. 2, it is determined whether or not a pause ending operation is performed, and if YES, the process proceeds to step S6 to calculate the elapsed time from the stored current time, that is, the interruption time. . Also, the program delay information of all channels broadcasting the same program is acquired and stored. Figure 4
(b) shows an example of the stored contents at this time. At the start of interruption, three channels A, B, and C were broadcast, but at the end of interruption, four channels D to G were added to the broadcast.
【００１６】更に図２のステップＳ６では、中断時間と
番組遅延情報に基づいて、飛び先のチャンネルを決定す
る。即ち、番組遅延情報を検索して、当初視聴していた
チャンネルを基準とする相対的な遅延時間が、中断時間
よりも大であり、且つ最も中断時間に近い値を有してい
るチャンネルを選択する。尚、該当するチャンネルがな
い場合は、相対的な遅延時間が最大のチャンネルを選択
し、当初視聴していたチャンネルが最終チャンネルであ
る場合は、最終チャンネルを選択するものとする。Further, in step S6 of FIG. 2, the jump destination channel is determined based on the interruption time and the program delay information. That is, the program delay information is searched, and the channel whose relative delay time with respect to the initially viewed channel is larger than the interruption time and has a value closest to the interruption time is selected. To do. When there is no corresponding channel, the channel having the maximum relative delay time is selected, and when the initially viewed channel is the last channel, the last channel is selected.
【００１７】図４の例では、中断時間が４０分であり、
当初の視聴チャンネルＢの相対的な遅延時間(最も先行
するチャンネルＡに対する相対的な遅延時間)が１５分
であるので、チャンネルＢに対して相対的に４５分遅延
しているチャンネルＥが選択されることになる。In the example of FIG. 4, the interruption time is 40 minutes,
Since the initial relative delay time of the viewing channel B (relative delay time to the most preceding channel A) is 15 minutes, the channel E delayed 45 minutes relative to the channel B is selected. Will be.
【００１８】その後、図２のステップＳ９にてチャンネ
ル切り替えを行なう。例えば図５の如く、ポーズ開始か
らポーズ終了までの中断時間が１０分間の場合、１５分
遅れのチャンネルが選択されたとすると、ポーズ終了時
点で、チャンネル切り替えが行なわれることになる。こ
れによって、最初の５分間は番組の視聴に重複を生じる
が、番組の一部見落としは防止される。更にステップＳ
１０では、番組が終了したかどうかを判断して、ＮＯの
ときはステップＳ３へ戻り、ＹＥＳのときはニアビデオ
オンデマンド視聴手続きを終了する。After that, the channel is switched in step S9 of FIG. For example, as shown in FIG. 5, when the interruption time from the start of the pause to the end of the pause is 10 minutes, and if a channel delayed by 15 minutes is selected, the channel is switched at the end of the pause. This causes duplication in viewing the program for the first 5 minutes, but prevents partial oversight of the program. Further step S
At 10, it is determined whether or not the program has ended. If NO, the process returns to step S3, and if YES, the near video on-demand viewing procedure ends.
【００１９】逆送り操作が行なわれた場合は、ステップ
Ｓ７にて、番組遅延情報を取得した後、現在視聴中のチ
ャンネルの遅延時間に所望の逆送り時間を加算して、目
標遅延時間を決定する。そして、目標遅延時間に最も近
い相対的遅延時間を有するチャンネルを選択して、これ
を飛び先チャンネルとして決定する。次にステップＳ９
へ移行してチャンネル切り替えを行ない、更にステップ
Ｓ１０にて番組が終了したかどうかを判断して、ＮＯの
ときはステップＳ３へ戻り、ＹＥＳのときはニアビデオ
オンデマンド視聴手続きを終了する。When the reverse feed operation is performed, the target delay time is determined by adding the desired reverse feed time to the delay time of the channel currently being viewed after acquiring the program delay information in step S7. To do. Then, the channel having the relative delay time closest to the target delay time is selected and this is determined as the jump destination channel. Next in step S9
After that, the channel is changed over to step S10, and it is determined in step S10 whether or not the program has ended. If NO, the process returns to step S3, and if YES, the near video on-demand viewing procedure ends.
【００２０】前送り操作が行なわれた場合は、ステップ
Ｓ８にて、番組遅延情報を取得した後、現在視聴中のチ
ャンネルの遅延時間から所望の前送り時間を減算して、
目標遅延時間を決定する。そして、目標遅延時間に最も
近い相対的遅延時間を有するチャンネルを選択して、こ
れを飛び先チャンネルとして決定する。次にステップＳ
９へ移行してチャンネル切り替えを行ない、更にステッ
プＳ１０にて番組が終了したかどうかを判断して、ＮＯ
のときはステップＳ３へ戻り、ＹＥＳのときはニアビデ
オオンデマンド視聴手続きを終了する。When the forward feed operation is performed, in step S8, after obtaining the program delay information, the desired forward feed time is subtracted from the delay time of the channel currently being viewed,
Determine the target delay time. Then, the channel having the relative delay time closest to the target delay time is selected and this is determined as the jump destination channel. Then step S
9, the channel is switched, and it is judged in step S10 whether or not the program has ended, and the result is NO.
If so, the process returns to step S3, and if YES, the near video on-demand viewing procedure ends.
【００２１】上述の如く、本発明に係るデジタル放送受
信機によれば、ＶＴＲにおけるポーズ、巻き戻し、及び
早送りに近い操作を実現することが出来る。As described above, the digital broadcast receiver according to the present invention can realize operations similar to pause, rewind, and fast forward in the VTR.
【００２２】上記実施の形態の説明は、本発明を説明す
るためのものであって、特許請求の範囲に記載の発明を
限定し、或は範囲を減縮する様に解すべきではない。
又、本発明の各部構成は上記実施の形態に限らず、特許
請求の範囲に記載の技術的範囲内で種々の変形が可能で
あることは勿論である。The above description of the embodiments is for explaining the present invention and should not be construed as limiting the invention described in the claims or reducing the scope.
Further, it goes without saying that the configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope described in the claims.
【図１】本発明に係るデジタル放送受信機の構成を表わ
すブロック図である。FIG. 1 is a block diagram showing a configuration of a digital broadcast receiver according to the present invention.
【図２】ニアビデオオンデマンド視聴におけるチャンネ
ル切り替え制御を表わすフローチャートである。FIG. 2 is a flowchart showing channel switching control in near video on-demand viewing.
【図３】デジタル放送における多重化デジタルデータの
パケット構造を表わす図である。FIG. 3 is a diagram showing a packet structure of multiplexed digital data in digital broadcasting.
【図４】番組遅延情報の格納フォーマットを表わす図で
ある。FIG. 4 is a diagram showing a storage format of program delay information.
【図５】ポーズ操作時のチャンネル切り替えを説明する
図である。FIG. 5 is a diagram illustrating channel switching during a pause operation.
【図６】タイムシフトサービス放送の概念図である。FIG. 6 is a conceptual diagram of time shift service broadcasting.
(１) チューナ (４) データ分離回路 (７) 制御回路 (８) 操作入力装置 (1) Tuner (4) Data separation circuit (7) Control circuit (8) Operation input device
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−193788（ＪＰ，Ａ) 特開 平７−307936（ＪＰ，Ａ) 特開 平７−250314（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H04N 5/38 - 5/46 H04N 7/10 H04N 7/14 - 7/173 H04N 7/20 - 7/22 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-7-193788 (JP, A) JP-A-7-307936 (JP, A) JP-A-7-250314 (JP, A) (58) Field (Int.Cl. 7 , DB name) H04N 5/38-5/46 H04N 7/10 H04N 7/ 14-7/173 H04N 7/ 20-7/22
Claims (2)
送され、これら複数のチャンネルは番組の放送時間につ
いて互いに異なる遅延時間を有しているデジタル放送の
受信機において、現在視聴中のチャンネルの視聴を中断
した後、視聴を再開する際、番組の一部見落としを生じ
ることのないチャンネルへ自動的に切り替えることが出
来るデジタル放送受信機であって、視聴の中断指令及び再開指令を入力するための操作手段
と、 視聴の中断指令が発せられた後、視聴の再開指令が発せ
られるまでの中断時間を計測する計時手段と、 視聴の再開指令が発せられた直後に、デジタル放送信号
から前記複数のチャンネルの遅延時間を取得し、記憶す
る記憶手段と、視聴の再開指令に応じて、 前記記憶手段を検索し、当初
視聴していたチャンネルを基準とする相対的な遅延時間
が、中断時間よりも大であり、且つ最も中断時間に近い
値を有しているチャンネルを決定する検索手段と、 当初視聴していたチャンネルを、前記決定されたチャン
ネルに切り換えるチャンネル切換え手段とを具えたこと
を特徴とするデジタル放送受信機。1. A digital broadcast receiver, in which a program having the same content is broadcast on a plurality of channels, and delay times of the broadcast times of the programs are different from each other. A digital broadcast receiver that can automatically switch to a channel that does not cause a partial oversight of a program when viewing is resumed after interruption of Operation means
And a time measuring means for measuring the interruption time until the viewing restart command is issued after the viewing suspension command is issued, and immediately after the viewing restart command is issued , the digital broadcasting signal is transmitted.
From the storage means for acquiring and storing the delay time of the plurality of channels from the storage means, and searching the storage means in accordance with the viewing restart command, the relative delay time based on the channel originally watched, The search means determines a channel having a value that is larger than the interruption time and has a value closest to the interruption time, and a channel switching means that switches the initially viewed channel to the determined channel. A digital broadcast receiver characterized in that
送され、これら複数のチャンネルは番組の放送時間につ
いて互いに異なる遅延時間を有しているデジタル放送の
受信機において、現在視聴中のチャンネルを所望の時間
差を有する他のチャンネルに自動的に切り換えることが
出来るデジタル放送受信機であって、前記所望の時間差を入力するための操作手段と、 前記所望の時間差が入力された直後に、デジタル放送信
号から 前記複数のチャンネルの遅延時間を取得し、記憶
する記憶手段と、前記所望の時間差の入力に応じて、 現在視聴しているチ
ャンネルの遅延時間に、前記所望の時間差を加算或いは
減算して、目標遅延時間を算出する演算手段と、 目標遅延時間に最も近い遅延時間を有するチャンネルを
検索する検索手段と、 当初視聴していたチャンネルを、検索されたチャンネル
に切り換えるチャンネル切換え手段とを具えたことを特
徴とするデジタル放送受信機。2. A program of the same content is broadcast on a plurality of channels, and the plurality of channels have a delay time different from each other with respect to the broadcast time of the program, and the desired channel is currently being watched in a digital broadcast receiver. A digital broadcast receiver capable of automatically switching to another channel having a time lag of, the operation means for inputting the desired time lag, and the digital broadcast transmission immediately after the input of the desired time lag.
Gets the delay time of the plurality of channels from No., storage means for storing, in response to input of the desired time difference, the delay time of the channel currently being watched, addition or subtraction to the desired time difference , A calculation means for calculating the target delay time, a search means for searching for a channel having a delay time closest to the target delay time, and a channel switching means for switching the initially viewed channel to the searched channel. A digital broadcast receiver characterized in that
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06398096A JP3384677B2 (en) | 1996-03-21 | 1996-03-21 | Digital broadcast receiver |
| US08/819,010 US5926206A (en) | 1996-03-21 | 1997-03-17 | Digital broadcast receiver having a time shifting function |
| DE69718695T DE69718695T2 (en) | 1996-03-21 | 1997-03-18 | Digital radio receiver |
| EP97104589A EP0797355B1 (en) | 1996-03-21 | 1997-03-18 | Digital broadcast receiver |
| KR1019970009521A KR100457931B1 (en) | 1996-03-21 | 1997-03-20 | Digital Broadcast Receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06398096A JP3384677B2 (en) | 1996-03-21 | 1996-03-21 | Digital broadcast receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09261548A JPH09261548A (en) | 1997-10-03 |
| JP3384677B2 true JP3384677B2 (en) | 2003-03-10 |
Family
ID=13244950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06398096A Expired - Fee Related JP3384677B2 (en) | 1996-03-21 | 1996-03-21 | Digital broadcast receiver |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5926206A (en) |
| EP (1) | EP0797355B1 (en) |
| JP (1) | JP3384677B2 (en) |
| KR (1) | KR100457931B1 (en) |
| DE (1) | DE69718695T2 (en) |
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-
1996
- 1996-03-21 JP JP06398096A patent/JP3384677B2/en not_active Expired - Fee Related
-
1997
- 1997-03-17 US US08/819,010 patent/US5926206A/en not_active Expired - Fee Related
- 1997-03-18 EP EP97104589A patent/EP0797355B1/en not_active Expired - Lifetime
- 1997-03-18 DE DE69718695T patent/DE69718695T2/en not_active Expired - Fee Related
- 1997-03-20 KR KR1019970009521A patent/KR100457931B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09261548A (en) | 1997-10-03 |
| EP0797355A2 (en) | 1997-09-24 |
| EP0797355B1 (en) | 2003-01-29 |
| KR100457931B1 (en) | 2005-05-27 |
| US5926206A (en) | 1999-07-20 |
| DE69718695T2 (en) | 2003-11-20 |
| DE69718695D1 (en) | 2003-03-06 |
| KR970068603A (en) | 1997-10-13 |
| EP0797355A3 (en) | 1998-03-18 |
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